Leading sire in Peru. Despite only 4 seasons at stud Biomydrin sired several horses of the highest caliber i.e. Santorín (Peruvian Quadruple Crown, GP Carlos Pellegrini Arg-1)and Biógrafo (GP Int. Sesquicentenario de las Batallas de Junin y Ayacucho Per-1), considered among the best in South America for the years of 1973 and 1974.